If you have a brilliant idea that appeals to a specific audience, you could create something like an educational blog or a YouTube tutorial series to generate online traffic. If your content is engaging and it sees enough daily traffic, you could sell ad space on your blog or ad spots on your channel. After you put in the heavy lifting, you can sit back, relax, and enjoy streams of passive income.
However, residual income typically has an expiration date, especially if it is being earned through a business. Effort must be continuously put into the business in order for someone to continue to receive residual income. Businesses must continue to market themselves in order to remain relevant. The best way to look at residual income in this sense is that it is a part-time job that earns full-time income.
Residual income is the amount of net income generated in excess of the minimum rate of return. Residual income concepts have been used in a number of contexts, including as a measurement of internal corporate performance whereby a company's management team evaluates the return generated relative to the company's minimum required return. Alternatively, in personal finance, residual income is the level of income that an individual has after the deduction of all personal debts and expenses have been paid.